Lock.



PATENTED JUNE so, 1903. L. NEISGHL.

LOCK. APPLICATION FILED JARZBO. 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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10 IODEL.

L; N'EISGHL. LOOK.

PATENTED JUNE 30, 1903..

APPLIOATIOR FILED JAN. 30, 1903.

'2 SHEETS-SHEET 2 UNITED STATES Patented June 30, 1903.

PATENT OFFICE.-

LOCK.

SPECIFICATION forming part of Letters Patent No. 732,431, dated June 30,1903. Application filed January 30,1903- Serial No- 14L154. (llo model.)

To all whom it mat concern.-

Be it known that LLOUIs NEISCHL, residing at Milwaukee, in the county ofMilwaukee and State'of Wisconsin, have invented a new and usefulImprovement in Locks, of which the followingis a description, referencebeing had to the accompanying drawings, which are a part of thisspecification.

My invention relates to a lock that is adapted for use on a door, andespecially on an outer door of a house and where a night-latch orspring-bolt is desirable in connection with a key-actuated bolt. 7

The invention has for its chief object the providing ofnovelmeanswhereby when the key-actuated bolt is thrown forward, so as to lock thedoor, the lock will be so set that the key can be turned or rotatedfreely in the lock in the manner ordinarily done for throwing the boltback or forward and the bolt will not be withdrawn or moved, there beingother devices in the lock that must be put into work' by a specialmanipulation of the key fitting and adapted to operate these specialdevices before the key will throw the. bolt back and other novel meansrelated incidentally to this chief object in the lock of the characterde scribed.

The invention consists of the lock, its parts and combinations of parts,as herein described and claimed, or the equivalents thereof.

My improvements may be embodiedin a lock adapted to be placed on thesurface of a door and secured thereto or in a lock adapted to be securedto a door by being let into the door in a pocket or recess therefor inthe edge of the door in a manner commonly employed or by any equivalentmethod; but as locks of this general character are most frequentlyaffixed to a door by being let into its edge I have in the drawingsshown my improvements in connection with a lock having a case of a 'formadapted to be let into the edge of the door; buttheinvention is not tobe confined tolocks wit-h cases of this particular form nor,indeed,exclusively to looks adapted to be applied to doors, because lockshaving my invention may be applied to drawers or any construction wheretwo members are brought together and are to be secured when in abuttingposition.

v ing positions.

In the drawings, Figure 1 illustrates one surface of my improved lock ina form adapted to be'employed with-a door by being let into the edgethereof, that side of the lock being shown that is advisably toward theoutside of the door. Fig.2 shows my im proved lock with that side of thecase removed that is shown in Fig. 1. 'Fig. 3 is a view of my improvedlock, showing the same parts thereof as are illustrated'in Fig. 2, but

with the key-actuated bolt thrown forward and other parts beingexhibited in correspond- Fig. 4 shows a fragment of the case of the lockwith a set of tumblers that are related to. the key-actuated bolt. Fig.5 is a transverse section of the lock on line 5 5 of Fig. 1. Fig. 6 is asection of the lock on line 6 6 of Fig. 5. Fig. 7 is a detail of thekey-actuated bolt.- v Fig. 8 is a detail of the spring-actuated bolt. I

In the drawings, 1 represents the-box-like case for the movable parts ofthe lock, which case is provided with a removable side 2 and alengthened and widened edge face-plate 3, through which face-plate thekey-actuated bolt 4 and the spring-actuated or latch bolt 5 are adaptedto move endwise to such extent as is common in looks of this character.Ways 6 are provided on the case, in which an inner portion of the boltis guided and permitted to move endwise, the bolt being held 'toward thefront yieldingly by a spring 7,

adapted to hold it forward yieldingly in the position shown in Figs. 1,2, and 3. A bellcrank lever 8, pivoted on the case, is provided with apin 9, taking into a slot in the bolt 5, whereby by the swinging of thelever the bol 5 can be moved rearwardly, so as to be wholly within thelock-case and out of engagement with any exterior holding means. Aknobspindle 10 extends through and is mounted revolubly in the lock-caseand is provided with a cam-finger 11, formed and adapted to engage thecomplementary formed and arranged free arm-of the bell-crank'lever 8 inthe manner shown in Figs. 2 and 3,'whereby by the rocking of the,knob-spindle the free arm of the bell-crank .lever will be raised andthe bolt 5 willbe withdrawn inwardly from the position shown in Fig. 3.This is a means to be used commonly for withdrawing the spring-bolt 5.Latch-holes 12 12 are provided through the sides of the case adapted forthe insertion therethrough of thumb latches, which may, if preferred, beemployed in the lock in connection with the bell-crank 8 instead of theknob-spindle 10. and 'cam 11.

The key-bolt 4 is held in position and to a forward-and-back movementbya stud 13, fixed on the side of the case 1 and projectinginto a slot 14in the flattened and somewhat expanded inner portion or shank of thebolt 4. This expanded and flattened shank 15 of the bolt 4 is not onlyguided in its movements forward and back by the stud 13, but is alsoheld in place movably at a distance from the side of the case by ashoulder 16, forminga part of the stud 13. A set of springheld tumblers17, pivoted on a pin 18, fixed on the wall of the case 1, are related intheir work to this bolt 4, being each provided with a longitudinal slot19 and laterally-extending recesses 20 21 at the respective ends of theslot, and a stu 22, projecting rigidly from the bolt 4, enters andtravels in these slots and recesses. These tumblers 17 are similar inconstruction to tumblers in common use and have a well-known operation,the walls of the recesses 21 being adapted to engage the stud 22 andhold the bolt in its withdrawn position, (shown in Fig. 2,) and thewalls of the recesses 20 are adapted to engage the same stud and holdthe bolt in its forward position (shown in Fig. 3) until the tumblersare lifted by the wards 23 on the outer edge of the web of a key 24,when, being severally properly lifted by the key, the tumblers areplaced in such position that the slots 19 in the several tumblers are inalinement and permit the bolt 4 to slide forward and back, the stud 22moving in the slots.

The shank 15 of the bolt 4 is provided with a shoulder 25, adapted to beengaged by the web of a key inserted into the case through the keyhole26 when the bolt is in the position shown in Fig. 2 and by the rotationof the key to be thereby thrown forward into the position shown in Fig.3. The bolt is not provided with any corresponding fixed shoul-.

der for withdrawing it from the position shown in Fig. 3 into theposition shown in Fig. 2; but the bolt is provided with a dog 27,pivoted on the shank of the bolt, the dog being provided with a shoulder28, that takes the position shown in Fig. 2, in which position it isadapted to serve as a shoulder to be engaged by the web of the key tothrow the bolt back from the position shown in Fig. 3. The dog 27 isheld normally in the position shown in Fig. 2 by gravity and by theaction of a spring 29, mounted on the case. The spring 29 bears againsta pin 30, fixed on the upper portion of the dog. A springdog 31, mountedon the case, is adapted to take into a notch therefor in the dog 27 whenthe dogis in the position shown in Fig. 2, and when the bolt 4 is beingthrown out this dog engages the lug 32 on the dog and compels theuptilting of the dog in the initial movement of the bolt outwardly untilthe pin contacts a stud 33, fixed on the case, and in the furthermovement of the bolt outwardly the engagement of the pin 30 on the stud33 prevents the forward movement of that portion of the dog with thebolt, and thereby uplifts the dog until the pin 30 escapes up- I of thespring 29, whereby by this contact the dog and the bolt 4 are carriedforwardly slightly to their proper position, if such position has notbeen already secured by the normal action of the parts. When the dog 27is thrown down into the position shown in Fig. 2, the nose 34 engages astop 35 on the boltshank 15 and prevents the further downthrow of thedog.

When the bolt 4 is thrown out, as shown in Fig. 3, and the door therebylocked, and the bolt-dog 27 is in the position shown in Fig. 3, the keybelonging to the lock or any other key that will pass into the keyholecan be rotated unlimitedly without throwing back the bolt 4. For holdingthis bolt-dog 27 in the position shown in Fig. 3, in which the shoulder28 is out of the path of the key, I provide a latch-dog, advisably aplurality of these dogs, which I denominate tumbler-dogs 36, whichconsist of a plurality of dogs pivoted on the side 2 of the case andprovided with catches 37, adapted to engage under the shoulder 38 on thedog 27 when it is in the position shown in Fig. 3 and hold it releasablyin this position. The lower or rear edges of these catches 37 arebeveled downwardly, being adapted to be engaged wedgingly by the upperedge of the shoulder 38, causing the tumbler-dogs to be pushed outwardlyas the dog 27 is forced upwardly by the forward movement of the bolt 4in the act of throwing it out. The tu mbler-dogs are held yieldingly totheir work by the springs 39, fixed on the case side 2. I advisablyinclose the dogs 36 and the springs39 by low walls 40 at the sides andtop of these dogs and springs. A guard 41, consisting of a bar fixed onthese side walls 40 and extending from one wall to the other over thedogs, serves to prevent the undue tilting of the dogs outwardly. Wards42, projecting from the several dogs 36, are adapted to be engaged bycorresponding wards 43 on the outer and inner edges of the web of thekey 24, whereby the tumbler-dogs can be moved suitably and in alinementout of engagement with the shoulder 38 on the dog 27 by a movement ofthe key when in engagement with them toward the right, as shown in Fig.6. In other words, the key is pulled toward its handle when it isinserted in the a look from the side of the door that is adjacent to thelock-case side 2, and the key is pushed against these tumbler-dogs whenthe the web of the key.

key is inserted from the other side, there being corresponding wards 43on both edges of It will be understood that while the key may be rotatedunlimitedly in the lock-case when the bolt is thrown,

' 36, as illustrated in Fig. 6, .thedog 27 will at once he released andunder the action of the spring 29 will be-moved to the position shown inFig. 2, so that by turning the key again it will engage the shoulder 28and will throw the bolt 4 rearwardly in the position shown in Fig. 2,unlocking the door so far as this bolt is concerned.

Besides the construction just described by means of which the key ismade capable of throwing the bolt 4 forward and back I pro vide othermeans by which when the key has thrown the bolt 4 back, therebyunlocking the door, the same key can be employed to throw the latch-bolt5 back, thus completely unfastening the door. For this purpose alatchbolt lever 44 is pivoted medially by stud-pin 45 on the shank 15 ofthe bolt4, and the upper end of this lever is engaged by a stud -pin 46,fixed on the bolt 5, which pin enters a longitudinal slot therefor inthe lever. The lower arm 47 of this lever is so disposed that when thebolt 4 is in the posi tion shown in Fig. 2 this arm 47 is in the path ofthe web of the key in the keyhole 26, so that when the key is rotatedover rearwardly to withdraw the bolt 4 the key can be further rotated inthe same direction,'and it will contact with the arm 47, which arm beingpushed toward the left, as shown in Fig. 2, will throw the latch-bolt 5inwardly or rearwardly, withdrawing it, so as to unfasten the door. Bythese means the key is adapted not only to unlock the bolt 4, but alsoto throw back the latch 5. The bolt 5 is also advisably provided with 2.lug 48, adapted to be engaged by the cam-finger 11, so that thelatch-bolt 5 will be withdrawn not only by the rotation of the spindle10, so as to actuate the bell-crank 8, but also by rotating the spindlein the other direction, whereby the cam-finger 11 comes into directcontact with the lug 48 and pushes the bolt'back- Wardly.

What I claim as my invention is 1. In a look, a key-actuated bolt, acase supporting and guiding the bolt for reciprocable travel, a fixedshoulder on the bolt to engage a key to throw the bolt out, a dogmounted on the bolt adapted to engage the key for throwing the bolt in,and means engaging the dog releasably adapted to shift the dog out ofthe path of the key by thethrowing of the bolt out.

2. In a look, a key-actuated bolt, a case supporting and guiding thebolt for reciprocable travel, a fixed shoulder on the bolt to engage akey to throw the bolt out, a dog mounted on the bolt adapted to engagethe key for throwing the bolt in, means engaging the dog releasablyadapted to shift the dog out of the path-of the key by the throwing ofthe bolt out, and other means adapted to engage the dog and hold itreleasably out of the path of the key.

'3. In alock, a reciprocable bolt having a fixed shoulder to engage akey in one direction, a dog pivoted 0n the bolt arranged to engage thekey in the other direction, a spring holding the dog to its workyieldingly,a spring-- dog adapted to engage the bolt-dog 'releasably ata distance radially from its pivot and compel the shifting of the dog onthemovement of the bolt outwardly, and means adapted to engage the dogand hold it in its shifted position releasably.

'4. In a look, a reciprocable bolt having a fixed shoulder to engage akey in one direction, a dog pivoted on the bolt arranged to engage thekey in the other direction, a spring holdingthe dog toitsworkyieldingly,aspringdog adapted to engage the bolt-dog releasably at adistance radially from its pivot and compel the shifting of the dog onthe movement of the bolt outwardly, a relatively fixed stud adapted tobe engaged wedgingly by a pin on the dog and to thereby complete theshift-ing of the dog, and means adapted to engage the dog and hold it inits shifted position releasably.

5. In a look, a lock-case, a reciprocable bolt, a dog pivoted on thebolt adapted to be engaged by a key for throwing the bolt rear- .Wardly,means for automatically shifting the dog out of the path of the key by asingle forward throw of the bolt, a set of tumbler-dogs pivoted on thecase to engage said bolt-dog, and springs holding the tumbler-dogs totheir work yieldingly.

6. In a look, a lock -case, a reciprocable bolt, a dog pivoted on thebolt adapted to be engaged bya key for throwing the bolt rearwardly,means for automatically shifting the dog out of the path of the key bythe forward movement of the bolt, a set of tumbler-dogs pivoted on thecase and having catches adapted to engage the bolt-dog releasably, saidcatches being beveled rearwardly to engage the dog Wedgingly reverselyand to be lifted thereby when the bolt is being shifted from its initialposition, and springs holding the tumblerdogs to their work.

7. In combination, a lock-case provided with a keyhole, a reciprocablebolt, a dog pivoted on the bolt adapted to be engaged by a key forthrowing the bolt rearwardly, means for automatically shifting the dogout of the path of the key by a single movement of the bolt forwardly,spring-actuated tumbler-dogs posed as to be engaged by complementarywards on the edge or edges of the web of the key when the key is movedendwise and to be thereby lifted, concurrently out of engagement withthe bolt-dog.

8. In combination, a lock-ease provided with a keyhole, a reciprocablebolt, a. dog pivoted on the bolt adapted to be engaged by .a key forthrowing the bolt rearwardly, means for automatically shifting the dogout of the path of the key by the movement of the bolt forwardly, springactuated tumbler dogs adapted to engage the bolt-dog in its shiftedposition and hold it outof the path of the key, wards on the tumblersformed and disposed to be engaged by complementary wards LOUIS NEISOHL.

Witnesses:

O. T. BENEDICT, ANNA F. SCHMIDTBAUER.

